2.4C OC help

[HazzzMatMan]

well i have a P4 2.4C chip. i have been trying to oc it for some time now, but i havent really been able to get it to be prime95 stable past 250FSB. i have upgraded my system to cope with the overclocking conditions. I have a DFI LanParty Pro 875B (rev. B1), X-Connect 500w PSU, Patriot XBL ram taht can do 533mhz with 2.5-3-3-8 timings. i have tried all voltages. from stock to 1.75. i cant seem to get it to be stable. did i get a bad chip? because i know i can eek 200-400 more mhz out of this thing. i have my ram at 1:1 with 2.5-3-3-7 timings, and its fine. I always get the prime95 errors above 250FSB. if somone could help me out with this issue, that would be great. my CPU dosent want to work over 250FSB with out atleast 1.75v. is it just a bad chip? thanks alot.

[SkyFire47]

have you tried different dividers other than 1:1 and see how far that will take you? i've got a 2.4c that won't go past 225@1:1 because of my ram but will sit completely stable at 250@5:4. from what i've read here some mobos just don't like some ram and/or a divider that you might be using it on.

[WeldZilla]

Definitely try the 5:4 divider and see how far you can go. If you can get to 250 1:1 there is a good chance you will go much higher on 5:4. My 2.4C goes to 309fsb @ 3710mhz! on the 5:4 divider. Which is nearly DDR 500. My mem bandwidth shot past 6600 on sandra at that setting with timing at 2.5-3-3-7. So give that 5:4 a try.

Wz

[HazzzMatMan]

nope, nothing. i tried running a 4:5 divider, with a 267 FSB, so 12x267=3204. I had lose ram latencies too. i said this before, but my ram is DDR533. And at 3.2, it is running at 533. This is the second set of ram ive used. My first kind was Geil PC3200ValueRAm. i used a divider with that, but i had the SAME issue of not going past 3.0. I have my voltage at 1.60 now, and its hovering between 1.6 and 1.55. My idle temp is 24* now. Im thinkint that 3.0 is the highest i can go. ive been researching OCing this CPU for 3 days now, and im getting mad (mostly at you WeldZilla ;)) at those massive OCs, and im stuck with a 3.0. Im checking my 12v and 5v rail, with a multimeter and they are both fine. Prime95 is still getting errors like 2 seconds into a Large FET torture test. could my mobo be holding me back? the only reason i got this mobo was for the OC capabilities it offered. BOIS update maybe? i dunno what to do. ive gone into the BIOS 3 times and turned off any thing that seemed to he holding it back. i got excited when i saw "limit *somthing* 250" and i was like woohoo, but it turned out to be the keyboard. anything elce i should turn off or on? i really really really want to get a sweet OC score, as i am obsessed with getting high scores in Aquamark3, and im at 65/66,000. any more help would be much appreciated.

Thanks!

[batboy]

This is about the 5th post lately about 2.4C not going higher than 250 FSB. I wonder what's up? Are these new CPUs? If so, maybe Intel is speed binning them and only using the poor cores as 2.4C. Used to be the 2.4C was a great overclocker.

[SkyFire47]

^_^ i put the first one up a couple of days ago. i've actually had my 2.4c overclocked for about a year now and i've wanted to upgrade recently but still want to save money, so i'm seeing how much more i can squeeze out of my chip. i'm sure other people have had their chips too but are posting more often cuz the 2.4c threads are popping back up.

[HazzzMatMan]

well sorry if im spamming, i dont want to do that. lets see if the other people with poor 2.4C OC's can post the manufacturing date. and the last few units of the product code.

Mfg date = 03/31/2004
Prod key = SL6WF

maybe i will look at other procs and get a new one, cause im kinda addicted to overclocking now. im really getting ticked off that i broke 1 darn pin off of my 3.0C CPU. i was cussing and cursing alllll day and allll night!

[deathBOB]

I made another 2.4C thread and I have had mine since november 2003, I just got around to OCing it now...


Where do I find that code?

[HazzzMatMan]

i found mine on the side of the box. maybe there is another way to find it, but i am not sure.

[deathBOB]

I threw out the box...

[SkyFire47]

packing date 9/16/2003
mfg date 26th week of 2003
SL6Z3

[batboy]

The packing date can only be found on the box, but the s-spec code (like SL6Z3) and the batch code will be printed on top of the CPU heat spreader (will have to remove the heatsink to see it). If you post the batch code, we can decipher where it was made and the date it was assembled.

Sky, you have a SL6Z3 which is a M0 stepping. Those babies are supposed to be the best 2.4C made. I have a SL6Z3 2.4C that I got in November of 2003. It'll run at a stable 3.55 gig. I have screen shots of it at 3.6 and 3.7 gig. But, honestly, I usually run it at 283 FSB (3.4 gig) because my Hyperram PC4200 will do that at the 1:1 ratio and because I can use low vcore.

[batboy]

Here is the label from my 2.4C retail box. It's a week 32 of 2003.

http://mywebpage.netscape.com/batboybain/SL6Z3.jpg

Here is the post from 14 months ago when I discovered my "brickwall" was RAM related.

http://www.ocforums.com/showpost.php?p=2271605&postcount=15

Later, after I took the 2.4C out of my backup rig and put it into my watercooled rig with modded N/B cooling, I was able to hit the high FSB speeds. There are a couple other old threads about my adventures if you search for them.

[zamac_man]

I am not sure the date of my 2.4c but it was within a month or two when they came out. I can get 265fsb on stock volts but it is not stable. If I mess with the voltage it is stable with prime95 for about 3mins.

[SkyFire47]

i know the M0's oc well. i was so happy when i got one by chance after reading up so much on these forums. that's why i'm so eager for my new ram to come in after reading all of batboy's threads.

the new g. skill LA's are supposedly rated higher than the LE's (pc4800 instead of pc4400) so these new sticks are "supposedly" able to hit 300fsb 1:1 at ddr600 with relaxed timings.

also, quick question for batboy, what did you do to modify your NB cooling on your IC7?

[batboy]

also, quick question for batboy, what did you do to modify your NB cooling on your IC7?

Here is my N/B cooling mod thread. There are other options too. Scroll down in that thread to see some other coolers that are available.

http://www.ocforums.com/showthread.php?threadid=245363

[bandit390]

FPO/Batch: 3341A125
Pack Date: 08/31/04

Im hoping its what most everyone says, these boards hate dividers past 250 unless you have ram it happens to love.

[SkyFire47]

Batboy, what heatsink are you using on the proc. for the IC7 with the thermaltake tiger 1 NB cooler on it? i'm using the Zalman Cu7000a which is huge and i'm afraid that both might not fit onto the mobo together since the Zalman actually hangs out over the IC7's NB cooler.

[batboy]

The TT Tiger 1 is on my watercooled IC7-G right now. It might not fit under a Zalman 7000 though.

http://mywebpage.netscape.com/batboybain/IC7-G+cool+mods.jpg

[WeldZilla]

What voltage are you running your mem at?

[HazzzMatMan]

well i was hoping that there would be a trend with the codes or mfg date, but there isn t :eh?: . ive tried everything i can think of :confused:. my computer wont even boot at 267fsb and 1.55v 1.6v gets errors in p95 faster then you can say bob cry :cry:. AGP is at 1.8, and ram is at 2.9 (cant go higher). im out if ideas. i think i might get a new proc. im looking at the 2.8 pressies. the last thing that i didnt try was seeing if there was a "dead spot" with the FSB, so i set the vcore voltage to 1.6 and the fsb to 280. 3.36ghz. it wouldnt even post. im pretty sure its the chip. BUT i have an extra chip around here somewhere. it has ONE broken pin off of one of the corners :bang head . would it be safe to try w/ the broken pin? :bang head :eh?:

[bandit390]

Try 270ish (I just used 1.675 volts, less might do it too but I just shot for the roof). For me 280 is no post, 275 makes a lound bleeep. 270 posts and runs windows fine, but prime makes insta errors. Odd that 249 is rock stable for me, 250+ is gone to crap but will keep on working and getting into windows clear up to 270 (prolly a touch over 270, didnt feel like messing with it anymore).

[HazzzMatMan]

ive tried all FSB's and literally NOTHING over 250 wont work in prime95. i found a place to send my 3.0C and get the broken pin fixed.

[SybrCLocK]

a friend has a 2.4a.. with stock cooling...
he overcloacked it to 6Ghz.. and it booted into windows stable... dont know about games..

its pretty hard for me to believe him.. but he sayd he'd send me CPUz
i wonder is it really possible?

[HazzzMatMan]

not possible. my chip (the C version) has a multi of 12. and most boards can do 400fsb. and 12*400=4800. 6.0ghz isnt possible

[batboy]

The 2.4A is a Prescott with an 18X multiplier. But still, there is no way it'll run 6 gig with stock cooling. The world record was 6 gig last fall with super cooling. I call BS.

[SybrCLocK]

i`m going there to check it out myself..

he sent me a pic at 3.6 Ghz, then at 4Ghz

but pics can be faked :beer:

[batboy]

A 2.4A at 3.6 gig is very believeable. However, 6 gig is impossible with air cooling.

[SybrCLocK]

The 2.4A is a Prescott with an 18X multiplier. But still, there is no way it'll run 6 gig with stock cooling. The world record was 6 gig last fall with super cooling. I call BS.


ok proof is here... the CPU ... claims to be a p4 2.4a on a asus p4c800 with some cooling (nothing fancy, heatsink with copper base with a 92mm cooler)

dont ask me why CPU-z see's it as a p4 3.6 Ghz.. once past 3 Ghz he sayd cpu'z chainged his info aswell

i`m... stunned

[Albuquerque]

Gee that screenshot looks awfully familiar... ;)

I think "your friend" should thank Macci over from XtremeSystems forums for the wonderful overclock: http://www.xtremesystems.org/forums/showthread.php?t=42655&page=1&pp=25

A watercooled 156W tec on the northbridge, more than two volts going through the northbridge / AGP circuitry, and enough liquid nitrogen to freeze a whole cow. I don't think your friend has any clue who's picture he raped...

[SybrCLocK]

Gee that screenshot looks awfully familiar... ;)

I think "your friend" should thank Macci over from XtremeSystems forums for the wonderful overclock: http://www.xtremesystems.org/forums/showthread.php?t=42655&page=1&pp=25

A watercooled 156W tec on the northbridge, more than two volts going through the northbridge / AGP circuitry, and enough liquid nitrogen to freeze a whole cow. I don't think your friend has any clue who's picture he raped...



Jeezas thanks... i`m gonna pay him a little visit... honastly i didnt know...
i`ll take my boxing gloves with me :temper: :D

[Albuquerque]

It was the watermark across the CPU-Z window that gave it away... CPU-Z doesn't have a watermark normally, so having that dark grey circular overlay meant something was up. If you look at the fullscreen capture over there on Xtremesystems (there's a link right below the CPU-Z screenie that says "full screen") and you'll see what the whole watermark looks like.

Basically ALL of the hardcore overclocking "teams" will mark their screenshots so nobody else can swipe them and say it's their own :)

[mtb856]

Unless your friend is Macci of course ;)

I don't see many other people reaching 6 gigs.... other than perhaps Oppainter or Fugger.

[jintoxicated]

ey guys quick question, i got a ic7-g for my 2.4c and i oc'd @ 3.42ghz on air(5 fans). i get about 59°C when running a game(under load).. is this a good overclock? i think i have 5:4 on my ratio and my FSB reads 190.3mhz and 18 multiplier.. is there a way i can lower my multiplier to like 12 and have a higher fsb? i been tryin to figure it outl. anyhow im at 3.42 and i thought id get an opinion/help. this is my first overclocking..

[mtb856]

If you have a 2.4C (800FSB), then at 3.42 you'll be at a 285FSB........ and the 2.4C's have a 12 multiplier. So you actually have a 2.4B.......... and for a 2.4B, yes that is a very good overclock.

Your temps are a little on the high side.... but as long as they don't go over 60-62°C, you should be fine. To answer your other question, no you can't adjust the multiplier on Intel chips...... the only way we can overclock is by increasing the FSB.

[batboy]

What MTB said, except the temps are getting a little high for a Northwood. But, maybe it's a 2.4A Prescott? Use CPU-Z to find out what you really have.